
Trivia: At the beginning of the attack in the graveyard, just after Hit Girl is knocked out, the gravestone says 'Rest in Piece' rather than 'Peace'. (01:17:55)

Trivia: At the start when the UNIVERSAL writing comes around the Earth, the TET can be seen in orbit.

Trivia: Crimson Typhoon was originally planned to have four arms and be piloted by female quadruplets. However, the producers couldn't find any.

Trivia: The first entirely English-language film made by acclaimed South Korean director Park Chan-Wook.

Trivia: When Flint Lockwood's Party-in-a-Box goes off during an Inventor Presentation, two Wilhelm Screams can be heard.

Trivia: Ben Kingsley's Maori facial tattoos took about an hour to apply for the character Mazer Rackham.

Trivia: The shooting script for the film was written in three weeks.

Trivia: When Keller looks at the newspaper detailing Bob Taylor's suicide whilst at Holly's house, the reporter who wrote the article is called Aaron Guzikowski. Aaron Guzikowski is also the name of the movie's screenwriter. (01:51:15)

Trivia: Sylvester Stallone was about to hit some meat in an abattoir. This is part of how his character Rocky Balboa trained in the original Rocky. (00:47:00)

Trivia: Originally, famed director Steven Spielberg was attached to direct the film with Will Smith reportedly in talks to play the lead. At this point in development, the film was going to be a more direct adaptation of the original Japanese manga, which differed greatly from the 2003 Korean film adaptation. However, legal issues forced Spielberg and Smith to withdraw from the project. Eventually the legal issues were settled, but the studio had subsequently decided to drop the idea of adapting the manga and instead decided to do a more direct remake of the Korean film due to its critical acclaim and strong cult-following.

Trivia: The monkeys in the newspaper look exactly like the monkeys from Madagascar, another Dreamworks movie.

Trivia: The Boeing 747 (G-BDXJ) seen in the background during the climactic scene at the airport is the same one used in Casino Royale to depict the prototype aeroplane at Miami. It is also seen in many episodes of the UK television series Top Gear.

Trivia: Although they played mother and son in this film, Debbie Reynolds (born 1932) was only twelve years older than Michael Douglas (born 1944).